Transcript General Arrangement Plan Lesson 2

General Arrangement Plan
Lesson 2
General Arrangement Plan
 depicts the division and arrangement of the ship
side view
plan views of the most important decks
cross-sections
 The views and sections display:
division into compartments (tanks, engine room, holds)
location of bulkheads
location and arrangement of superstructure
parts of the equipment (winches, loading gear, bow thruster, life boats)
 Basic data included in the GAP:
dimensions
volumes of the holds
tonnage
deadweight
engine power
speed
class
a. upper deck or main deck
b. forecastle
c. tweendeck
d. tanktop
e. upper hold and lower hold
f. peak tank
g. chain locker
h. bosun’s locker
i. collision bulkheads
j. engine room
k. steering machinery
l. double bottom
m. cofferdams
n. superstructure
a. Upper deck or main deck
 the principal deck of a vessel; in some ships the highest deck
of the hull, usually but not always the weather deck; in sailing
warships often a deck under the upper deck
b. Forecastle
 foremost part of the upper deck
 usually raised above the main deck
c. Tweendeck
 space between decks – intermediate deck
 divides the vessel into separate holds
d. Tanktop
 inside bottom of the vessel
 the plating forming the inner bottom of a ship hull
e. Upper hold / Lower hold
 spaces that contain the cargoes
f. Peak tank
 foremost and aftermost spaces of the vessel
 serve as storage spaces for ballast water
 capable of absorbing part of the impact forces that are
released in case of a collision
g. Chain locker
 storage for anchor chain
h. Bosun’s locker
 = Boatswain’s locker
 serves as storage for ropes, paint and dunnage
i. Collision bulkheads
 foremost major watertight bulkhead
 prevent the vessel from flooding in case of collision with
another vessel
 fireproof
j. Engine room
 = machinery space
 watertight compartment
 houses the main and auxiliary machinery
j. Engine room
 on a large percentage of vessels engine room is located near
the bottom, and at the aft
 usually comprises few compartments - this design maximizes
the cargo carrying capacity of the vessel and situates the
prime mover close to the propeller, minimizing equipment
cost and problems posed from long shaft lines
k. Steering machinery
 gives the power for moving the rudder
l. Double bottom
 provides strength and storage space for fuel, lubricating oil,
fresh water, salt (ballast) water and potable water
m. Cofferdams
 empty spaces / longitudinal and transverse separations
between tanks
 prevent leaking of liquids from one double bottom tank into
another
n. Superstructure
 accommodation for the crew and passengers
 messroom, galley, pantry
Shipboard terminology for position in a
ship
 COLLOQUIAL TERM
 fore end
 after end
 midships part
 right side
 left side
 in front of
 behind
 across (the ship)
 from stem to stern
M.E.TERM
forward
aft
amidships
starboard s.
port s.
before / forward of
abaft / aft of
athwartships
fore and aft